Journal
POLYMER DEGRADATION AND STABILITY
Volume 182, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2020.109391
Keywords
Biodegradable polymers; Aliphatic-aromatic copolyesters; Pbat; Sulfonated polyesters; Gas barrier property; Hydrophilicity; Water dispersibility
Categories
Funding
- National Key Research and Development Program of China [2016YFB0302402]
- National Natural Science Foundation of China [51773177]
- State Key Laboratory of Chemical Engineering [SKL-ChE-18D02]
- 151 Talent's Projects in the Second Level of Zhejiang Province
Ask authors/readers for more resources
Poly(butylene adipate-co-terephthalate) (PEAT) is one of the major commercialized biodegradable polymers. But modification of PEAT is still necessary to satisfy requirements of various applications. In this study, PEAT-based sulfonated copolyesters (PBATsI) with various compositions (7-12 mol% sulfonated unit) were synthesized by copolycondenation using dimethyl isophthalate-5-sulfonate sodium (SIPM) as a functional comonomer. The copolyesters were characterized with H-1 NMR, viscometer, DSC and XRD, and evaluated with TGA, tensile, gas barrier, contact angle and water dispersion testing. For the first time, it was found that the sulfonated copolyesters manifest improved color, clearly higher O-2 and CO2 barrier properties, better hydrophilicity and excellent water dispersibility when compared with PEAT. The copolyesters containing 9-12 mol% BsI unit can be facilely dispersed in water to obtain stable dispersions with unimodal particle size distribution in < 100 nm range. These advantages may help them to find uses in tuning biodegradation rate of PEAT and further physical modification of PEAT. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available